Covering: - What is a Content Repository and how does it work - Comparison to relational database - Why stable APIs are important and what to do if they are not - Benefits of the open and transparent development - Oh boy.. can I see it already! - Why Sling is called Sling - Various ways to deploy and develop code - Deployment options and clustering

1. CRX 2.2 – Developer Deep-Dive
Cedric Huesler, Gabriel Walt – March 2011
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.

2. What you will learn in the next 50mins
 What is a Content Repository and how does it work
 Comparison to relational database
 Why stable APIs are important and what to do if they are not
 Benefits of the open and transparent development
 Oh boy.. can I see it already!
 Why Sling is called Sling
 Various ways to deploy and develop code
 Deployment options and clustering
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5. CRX in a Nutshell – What’s in the Package?
Web-based IDE
Eclipse-based IDE Web Application Framework
Configuration Mgmt
Hot-code deployment
Application Runtime
Package Manager
Package Share
Hot-backup
Shared Nothing Cluster
Content Repository
JavaEngine
Servlet
VM
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.

6. Now what’s wrong with databases?
Database Aging?
A. All fields become optional
B. All relationships become many-to-many
C. Data type change
 Boolean → multiple choice
 Character fields → text
 Date → optional month, day
Hard to do: Transparent Versioning, on-the-fly schema changes, full text queries, ….
6
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.

7. Content Repository Structure (simplified)
parent
node
type nt:folder nt:file nt:unstructured rep:User rep:ACL nt:nodeType …
mixins mix:versionable mix:lockable sling:VanityPath cq:Taggable ….
key = value string long date path binary ….
key = values[] string long date path binary …
nodes
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8. First – Content Repository – then JCR
It’s a database that looks like a file system and
features good stuff like unstructured, versioning, observation…
Defined by Expert Group
Java API
Stable API
JCR
Java Content Repository
Open Standard
JSR-170 (2002-2005) JSR-283 (2005-2009) JSR-333 (2010-....)
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9. CRX – Built-in Protocols/APIs
Add, consume, managed content with these interfaces:
 Java Content Repository API – complete JCR 2.0 implementation
 Content Management Interoperability Services - CMIS 1.0
 WebDAV – with versioning, access control and search
 Windows Network File Share – CIFS/SMB
 RESTful Web API for JavaScript and Flash/Flex
 Java Remoting with RMI and HTTP
 LDAP and any JAAS plug-in
 Native repository interface via Virtual Repository – e.g. Microsoft SharePoint
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10. Managed Java in OSGi Container
Security
Bundle B
V2.1.0
Services Bundle A Bundle B
V1.1.0 V2.0.0
Bundle A Bundle B Bundle C
Service Registry V1.0.0 V1.0.0 V1.0.0
Life Cycle Class Loading
OSGi Container
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11. We call it “Open Core”
Application Runtime
Web Framework: Apache Sling Web/Eclipse IDE
OSGi Runtime: Apache Felix Vault & SVN Tools
Repository
JCR: Apache Jackrabbit Search Extensions CIFS/SMB Access
Search: Apache Lucene Graphic Rendering Virtual Repository
Content Extraction: TAR-based Shared-nothing
POI, Tika, PDFBox Node-store Cluster
CRX Platform
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential.

12. Let’s hack something
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13. Sling Cheat Sheet
Download here – or on: http://dev.day.com/content/ddc/blog/2008/07/cheatsheet.html
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14. Typical Developer Setup
QA PROD
Sub-
App Packages App
version CRX CRX
Load
Package Balancer
Share &
App HTTP
App CRX
Accelerator
CRX CRXDE
LDAP, CRM, Billing, ECM Repositories
Vault
Any IDE
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15. CRX Clustering (Share Nothing vs. Share DataStore)
Node 1 Node 2
CRX Repository Open connection for 2-way
CRX Repository
[Master] communication to fetch
changes from master & get
notifications.
Index Data Data Index
TarPM Forward writes TarPM
Store Store
Read/write Binaries Read Binaries
DataStore
Shared FS / S3
Install CRX on Amazon EC2 – check out: http://dev.day.com/installcrxonec2
© 2011 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 15

16. Try it yourself! – Your Questions.
 Download CRX: http://www.day.com/downloadcrx
 Create account and get Developer License and access to PackageShare
 Version 2.2 is the latest
 Documentation: http://docs.day.com/
 Contact
 Cedric Huesler: chuesler@adobe.com
 Gabriel Walt gwalt@adobe.com
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